Converters & Units
Units, time zones, number bases, and color spaces.
New Unit Converter
Convert length, weight, temperature, area, volume, speed, time and data sizes.
New Unix Timestamp Converter
Convert epoch time to a date and back, with live current time and ISO 8601.
New Number Base Converter
Convert between binary, octal, decimal, hex and any base from 2 to 36.
New Roman Numeral Converter
Convert numbers to Roman numerals and back, with validation.
New Text to Binary Converter
Convert text to 8-bit binary and decode binary back to text.
New Morse Code Translator
Translate text to Morse code and back, with audio playback.
New Aspect Ratio Calculator
Lock a ratio and solve the missing width or height for a new size.
New Number to Words
Spell any number in English words, with a currency mode for cheques.
New Time Duration Calculator
Find the time between two clock times and add up multiple durations.
New Time Zone Converter
Compare the time across cities and plan meetings that work for everyone.
New Currency Converter
Convert between 30+ world currencies with recent reference rates — fully in your browser.
New Scientific Calculator
Full scientific calculator with trig, log, factorial, powers and memory functions.
New Quadratic Equation Solver
Solve ax² + bx + c = 0 and get real or complex roots with the discriminant and working shown.
New Triangle Calculator
Solve any triangle — find missing sides, angles and area from any 3 known values.
New Shoe Size Converter
Convert shoe sizes between US men & women, UK, EU and CM — with a complete international size chart.
New Number Sequence Generator
Generate arithmetic and geometric sequences, Fibonacci, primes and custom formulas.
New Celsius to Fahrenheit
Convert Celsius, Fahrenheit and Kelvin — three-way live conversion as you type. Key reference table included.
New Cooking Measurement Converter
Convert cups, tablespoons, teaspoons, ml and grams — ingredient-aware for accurate baking conversions.
New Speed Distance Time Calculator
Solve for speed, distance, or time — enter any two values and the third is calculated. Supports km/h, mph, m/s and mixed units.
New Area Calculator
Area calculator for 10 shapes: circle, rectangle, triangle (3 methods), trapezoid, ellipse, rhombus & more. Formula shown instantly.
New GCF & LCM Calculator
Find GCF (greatest common factor) and LCM (least common multiple) for up to 10 numbers. Euclidean algorithm steps & prime factorization shown.